Turbine-balde shroud.



J. s. GREEN. TURBINE BLADE SHROUD. P 0 P Patented Dec. 5, 1911.

1) salaries PATENT OFFICE.

LFDNATHAN S. GREEN, OE PITTSBURGH, PENNSYIiVANIA, ASSIG-NOR, ZBY MESNEASSIGN- MENTS, 'IG THE COLONIAL TRUST COMPANY, TRUSTEE, OF PITTSBURGH,PENNSYL- VANIA, A CORPORATION OF PENN SYLVANIA. I

TURBINE-BLL'HDEI 'srmoun.

11b all whom if may concern:

Beit known that I, JONATHAN S. GREEN, a citizen of the United States,and a resident of Pittsburgh, in the county t Allegheny and State ofPennsylvania, have made a new and useful Invention in 'lurbinediladeShrouds, of which the following is a specification.

This invention relates to turbine blade construction and more especiallyto covers or shrouds therefor, and has for its object to provide asimple and reliable construetion and one of minimum cost.

In the drawings accompanying this application and forming a partthereof: Figure 1 is a view in perspective of a plurality of bladesprovided. with covers or shrouds con structed in accordance with thisinvention; Fig. 2 is a view in perspective of a single blade machinedibr use in this construction; Fig.3 -is a view showing the face of ablade,-the shroud or cover in cross section,

and a spacin piece, such as utilized between adjacent blades, insection; and, Fig. 4 s a view in perspective of a portion of one-half ofthe cover or shroud used in this invention.

It will be understood that the invention is equally applicable to thestationary blades, generally termed vanes, of a turbine,

although in..the drawings Ihave illustrated it as applying to therotaryblades or buck- .Fig. 1.

ets only, without any idea of limiting the invention to use with either.

.In carrying out the invention a blade 5 of any desired cross section.and formedin any desired manner, either drawn or cast or drop forged,is milled near one end as shown at 6 so as to leave a rectangular conandhot- The blades may be secured in any suitable manner to the turbineelement and, if de-. sired, may be assembled into groups .prior toassemblage in the turbine as shown in In this, view separatespacingmembers.8 lie between adjacent-blades and a wire or red '9 passesthrough thelspacing members and blades, the spacing members beingprovidedbvdh holes 10 to receive the rod or 'Wir'c while the blades areprovided Specification of Letters Patent.

with holes 11 for the same purpose. A

shroud or cover formed of two portions 12' rivets 17.

Having thus described myinvcntion, what I claim is 1. is a turbine, thecombination of blades or buckets, a cover or shroud for the bucketscompounded throughout its length and means independent of said bladesfor bind ing the parts of said shroud together.

2. In a turbine, blades or buckets, acover or shroud for said blades orbuckets formed.

hit two parts overlapping throughout their Patented Dec. 5,1911.

' Application filed April 28,1909. Serial No. 492,734. I

length; and means independent of said blades for binding said partstogether.

3. In a turbine, blades or buckets, a cover.

or shroud for saidblades or buckets formed of twoparts, each of whichembraces the same blades or buckets, and means indc'-. I

pendent of said blades or buckets for securing the parts together.

a turbine','blades or buckets, a cover 'I or shroud for said-bladesorbugkets formed of two parts, each of-which embraces the same bladesor" buckets and rivets situated between adjacent blades or buckets forse curing the parts together.

5. In a turbine, blades'or buckets, acov er or shroud for said blades orbuckets formd of two parts, eac'hjof which embraces the same blades orbuckets, and means located between adjacent blades or buckets forsecuring the partstog'ether. l

6. The combination witha tu-rbine blade or bucket of a cover thereforcomposed of '95 pendent of said blade or buckefis for bindsubscribed myname this 27th day of April, ing said members together. V 1909.

8. A shx'oud for turbine blades or buck- JNO S GREEN ets composed of twooverlapping members, 5 each notched aleng one edge, and means forWitnesses:

securing t he same together. C. N. MOGHEE,

In testnnony whereof, I have hereunto GEO. A. WALKER.

